Improvement in machines for crushing bones



lPATENT l FFICE ADAM KUMPROF BUFFALO, NEW YORK.

IMPROVEMENT IN MACHINES FOR CRUSHING BONES.

Specification forming part of Letters PatentNo. 159,334, dated February 2,1875; application led v June 27, 1874.

To all whom it may concern:

Be itknown that I, ADAM KUMPF, of the city of Buffalo, in the county of Erie and State of New York, have invented new and useful Improvements in Machin es for Gru shin g Bon es, of-whieh the following is afull, clear, and exact description.

The nature of my invention consists in the construction of the crushing-rollers, made of sections, and placed upon shaf'ts in combination with the general arrangementof parts, as fully explained by reference to the accompanying drawings and the description thereof.

Figure l in the drawings is a perspective elevation of my improved mill. Fig. 2 is a longitudinal section of the rollers A A'. Fig. 3 is an end view of Fig. 2.

Like letters of reference indicate like parts inthe several figures.

A A are two sets of crushing-rollers, consisting of two rollers each. They are placed within a suitable frame, one above the other, and at con venientdistance apart. Each of the rollers composing the two sets consist of the shaft B, the sheaves G, and the fastening-nut D. B B are the shafts of the rollers A A. They are provided with bearings on each end, running in adjustable boxes placed upon the frame. They are furthermore provided with pinions on each end, to connect the two rollers composing one set. One of the upper rollers is also provided with a spur-wheel, N, fastened to one of the shafts. C are a number of sheaves placed upon shafts B B', and fastened there by means of keys. They are provided on their circumference with a belt of V-shaped cogs or teeth, G2, extending half-way across the face of the sheaves C so as to leave a smooth or blank face, C3, upon each sheave, of the width of the teeth G2 provided thereon. The pitch of the teeth G2 of the lower set of rollers is smaller than that of the upper set. ln arranging the rollers, the sheaves C are placed upon the shafts B in such a manner that a smooth or blank face, G3, will follow each row of teeth, the two rollers composing each set being placed so that each row of teeth will engage with the blank space of the opposite roller, so that the teeth of the two rollers will pass each other. The pinions of the upper set of rollers, connecting each roller, are of equal y diameter, while those of thelower set vary so much that one roller will make about three revolutions to two of the other. D is a nut connecting the number of sheaves placed upon one shaft. E arev a number of Scrapers arranged within the frame. They are bearing upon the smooth part of the rollers A, and serve to free the same from the crushed substance adhering to the same. F F are two vibrating -sieves, suspended between the frame-work, the upper one serving to feed the upper and the lower one serving to feed the lower set of crushing rollers. Each of the sieves is actuated by means of a 'crank-shaft and connecting-rod, G. H is a feeding-table, arranged on an incline. It has guiding sides at right angles to the plane of the table, and serves the purpose of introducing the bones to be crushed upon the upper set of rollers. K is an elevator of usual construction, having its leg placed into the receiverL and discharging the contents of the receiver L upon the upper sieve F. L isareceiver placed below the lower set of crushing-rollers. It extends outside of the frame-work, and has an inclined bottom, so as to allow the crushed bones falling from the lower set of rollers to fall into the leg of the elevator. M is the main driving-shaft. It is resting in bearings placed upon the frame, and provided on one end with a pinion engaging with the spur-wheel N, and on the other side with two pulleys, one for receiving the power for driving the mill from the main line shaftin g, and the other to transmit the revolution to the lower set of rollers.

In operation, the bones to be crushed are placed upon the inclined table H, and fed by hand between the upper set of crushing-rollers. From here they fall upon the lower sieve, those being of sufficient iineness falling through the meshes of the sieve, while those requiring a further division pass over this sieve upon the lower set of crushin g-roll ers, having teeth of a nner pitch than the upper set. Having passed the lower set of rollers, the bones fall into the receiver L, and are thence elevated upon the upper sieve, where they are again separated, those falling through the sieve being nished, while the others go through the operations ot' crushing and sifting again. Should any solid substance enter the mill by accident and break one or more of the crushing-teeth of the rollers', a new sheave may easily be placed upon the shaft by removing the nut D and replacing the broken sheave by a new one, thus saving considerable time and expense.

Having thus fullydescribed my invention, I desire to secure by Letters Patent 1. In a bone-crushing mill, the combination of a pair of rollers composed of a series of sheaves, C, arranged and held upon revolving shafts by means of retaining-nuts D, each of the sheaves G composing the rollers being formed with a belt of Vshaped teeth, G2, and a smooth surface, G3, the belt of teeth G2 of one roller operating with the smooth surface C3 of the other, in the manner and for the purpose substantially as set forth.

2. In combination with a set of rollers, A,

constructed as described, the series of Scrapers E, each engaging with a blank space between the rows of V-shaped teeth, substantially as described, and for the purpose set forth.

3. The'combination, with the upper rolls A, composed of a series of sheaves, C, provided with teeth G2, and surfaces C3, as described, of the inclined table H, vibrating sitters F F', rolls A A', Scrapers E, receiver L, and elevator K, all when arranged and operatin g substantially as and for the purpose described.

In witness that I claim the foregoing as my invention, I have hereunto set my hand.

Y ADAM KUMPF. Witnesses:

MICHAEL J. STARK, WM. H. DoPP. 

